Carbureter.



W. GILLBTT.

OARBUBETBB.

APPLICATION FILED JULY 28, 1911.

Patented June 30, 1914.

3 z a J a 4 N. 1- 3 2; ll 7 z u \\M\\.\ M 7 1 PM 4% 5 a 3 "PATENT. OFFICE? V wALrnit GILLnT-g orcLliikEiek -hoiiiqi Application filed July 26, 1911. Serial No. $6,543.

.TQ all whom it mag 'co'ncem:

Beitknownthat I, l-VALTER Gmmrr, a siibject" ofthe King of Great Britain, residg'a't Cleveland; in the county of Cuyahoga nndState of Ohio, have -in \'en teda certain ers, of which the following is a, full clear,- d exact descr ption, reference being. had

the'aecompanymg drawings;

n throttle -zalve is snlistantially wide open,

InehrryinQ-out uny-invention in the ex ipl licatron shown herein, :2; valve -of the tnryplu type is provided lniving a, pa'

itsopp'osite end with the induction conduit ding to the engine, s'arclpassageway? con-- pessagewa thfough one end of the e ,plug a ong.:1 the longitudinal axis et the s'rrea of midi-passageway end 11 the qua-ntityof nirconducted there ethe passageway of the valve but whi'ch 11 (ln'ced by the piston or pistonsoperat ng at high speed, to non-obstructing pQfijltlOn.

'When this suction falls, thro-iigh reduction of piston speed, or spring tendsito'movethe 1 t5.

w and useful "Improvement in Carbu} hasffor itsgeneral objecttljie provision of a ructioxr whereby 5 the mixture may be i a onnitieally enriched at times. when the -pitbn speed ofan en in'eds lowered while ffwill oec-un when the engine "is' subjeoted to lliezi vy l'qad, a familiar. instance beihg {If-- "forded -by an automobile climbing whdl.

ge'we'y t e-reth'rongh, communicating at oneofi'ts'ends with the air inlet. port and at 11ti1'ting"the mixing chamber of the ear-. biireterg Gasolene is supplied to the nl-xin-g.- el'iarnber' through ajet which. projects intov reef, VVit-h-infthe. passageway is anobrating. means which will "automatically gh when the piston speed-is redneedn he -'sp cificembodinient sh'own'hereimtlie trnctingzmeansq a leaf: or vane?- so -g1r-' geld as to beeapable ofpattia'lly obstrucb y be moved; through .the suction -pro'.

leaf or vane .into obstrneting position, thus reducing the eflective area of the passage-- partly in secbure'ter' eOnstrnCted inaieeordancej-with my tional view of a portion of the (i:ii'hn1'ete1',

talkenil rough the valve and correspo'luling Suhstantiall; to the line 2 of Fig. 1 nnzl Fig-3 rep'r 'ents :1 Vertical sectional view of the valve and its casing showing the valve in openfposition. p i 1 The carl'mretershown hciiein is of the seine general type. as that illu5trated,descrihed and. ehi-iined in m v npplicntion No. 544739, filed l ebrl'1ary. 19th, 1910, andcmnprls s genemily the. following anes- 1. 1e-

.inQVnhl; cover 2 t lnr'reon a nd the s gp ply connection pro ect ngjinto the bottom. The -'l')()it-( )'1l1-Of"'tlllS'.-(:l'lilllllkfl is provided with a wvhi eh I); .5, the said boes' con mnnncnting fwith the-1nteriqr-of the. einunber 1 and hcinfprovided 'i-thn; wilre (ihy means; of which the interror of: the ,(l lH-lllbCl may through the outlet 5.

i-rahly east therewith; n casing 7 for the be drained hollowv 4 projeeting ternily theref roln provided 1t -hdenim-g6 port lro1'eetirrg fronl-the ehuniher 1,.nrid pref- -fi-eeomniodatimr ofthe rot-ar-ypliig vnlve,- .tlie zur inlet port-and the induction COIldltlh-fl' .TOthQ bottom of this easing 7"'thereis se-;

-crnredl .an air ndinission 'menihen 8 conveniently formed. of at esting hevln fa, let-em inletpm-ti'i) there he-ingaponcave or dished .ciiicuh uw-wi elOnrrie'd hythezupperrend' of the stern :ll which is .throadedintothe '-ineinl)er S and provided with n- -suitable,

l'hnmlr serew 12. The valve and its fstern'v tire located. in line with the exishf the'ind'uction passageway :13 provided in; .'the casing- 7. l The casing (is provided with-a: bylindricz l bore extending transversely thereof," snld bore being of considerably greater d1- =zilmeter tlnin tilt ll; ofthe passageway and forming a seat flipthe rotary throttle valve plug 14.- Thisplug-is provided with i pas.-

en'geway 15 adapted to register withthe in- '(hietion conduit 13, and with the air inlet port,'all of which are of the same diameter.

One end of the ping is provided vithmneck 1O projecting through adisk 17,- which disk 7 may. be secured to the casing 7 in any-convenientmanner. The neck 1(3.'-is provided with an. operating crank 18, which may be connected with the throttle levera. Ihe yeranli' is shown as securedto the! neck by- .niealneof a in-.19, The' side of the caising 7 opposite the .neek v16- ispr ovided with a boss 20, Said boss being intenially threaded.

io-s

afor thereception ofa screw cap 21 lone from the float feed chamber 1' enters the interior oflhis boss at a point near the inner end of the latter. The jet plug 22 is mounted in. this -boss, said plug being provided with a pair of spaced integral collars 23 provided each with threads adapted to mesh with the threads Within the boss. The

26 denotes the obstructer which I end loy .for the purpose 'of'reducing the area 0 the passageway below and increasing the suction upon the jet orifice 27. The obstructer is shown as a leaf'or vane, preferably of light metal, which is pivoted within the valve 14. The pivot 28 extends across the central portion of theassageway in said valve and, when the vaii'e is fully open, is

\ below the jet orifice 27. The leaf 26, with the parts in this position, extends upwardly and towardone side of the passageway and is of such shape-as to contact with the wall of the passageway, the upper edge of the leaf, when in full obstructing position, being adjacent to the smallpox-t 29 provided at the outletedge of the valve 14, as shown clearly in Fig. 1. The lower end of the leaf 26 extends a short distance beyond the pivot. 28, as shown at 30, to provide a partial counterbalancefor the part on the other side of the pivot, thus allowing tbe use of a more. sensitive spring. l urthermm-e, the passageway 13 is thus further obstructed.

F or the purposeiot normally retaining the leaf in full obstructing position, the following construction is provided :--l1 denotes a sleeve which is threaded into the neck 16. axially thereof, the'slecve. preferably projecting into the interior of the \alvc l-l-. sleeve is a spindle 32', said spindle'extcnd- 'ing entirely through the sleeve. and having at its inner end an arm 33 which is adapted to engage the upper edge'porgion of the leaf is. At its outer end, the sleeve 31 is provided with a cup 34, and in this cup there is slidably mounted.the cap to which the outer end of the spindle 32 is socured. A spriug'3G surrounds the outer portion of the stem 32, within the can 34, and is connected at "one'end tothe s eevc (through the cup 34) and at its other end to the cap 3:"), and is so arranged that it tends to rotate the spindle'fll in a direction to hold the outer end of the arm 33in engagement with the leaf or obstruct-er 26. For the Mounted centrally within this purpose of adjusting the tension of the spring 36, and thus varying the amount of suction necessary to rock the leaf 26 on.

The lower or inlet portion of the plug isprovided with a port 39 therethrough, which may be substantially acorn shaped, as

is the ease with the port iii the plu shown in my aforesaid application. In ad ition to this port, a port .40 is provided on each side of the port 39 and between the la'st mentioned port and the inlet edge 14 of the valve. The ports 40 may be substantially .key-hole shape, as-is the ease of my afore- Furthermore, the outlet said application. portion of the valve may be provided with a port 41 located near the edge ofthe outlet portion of the valve, opposite the port 29.

From the foregoing construction and d'e scription, it. is believed that the operation will be evident. By reference. to Fig. 1, it will be seen that. when the valve is closed or nearly closed. the obstru'ctcr will have no effect upon the operation of the carburetor.

\Vhen the valve is even more than half open, I

the arrangement and shape of the obstructer are such that it will be practically inellective, and it is not until the valve is, more than half open that'the obstructercan become effective. \Vhcn the valve is fully open, which is the case when running at high speed and under heavy'load (as when climbing a hill) the obstructer is in position to develop its maximum etlieiency. l Vith the pistons runningat high speed, the obstructer-will extend substantially vertically in the passageway 15 (as shown in dotted line in Fig. 3) and will have no appreciable effect upon the mixture; When the pistons run at lower peed, as when u uder heavy load, the spring-pressed arm 33 will hold the obstructer in contact. or in substantial contact, with the adjacent. wall of the passageway (as shown 111 full line ill Fig. f5) thereby automatically reducing the cross sectional area of this passageway at the in- .let end and below the jet orifice 27.

This reduces somewhat the quantityof air sup plied to the mixing chamber and increases the proportion of gasolcue. with the result that the mixture is enriched and, the engines are enabled to develo more power on account oi such enriching. In dot (ind dash line. in Fig. 3, the obstructer is shown inthe position which it will assumefor int rmediate piston speeds. I

While my invention is shown as applied to a carbureter, of the ty 0 disclosed in my earlier application herein efore referred to, certain features of construction are applicable to other environments and to cases wherein a throttle valve is rovided separate from the mixing cham er as well as where the valve forms part of such chamher. Ilence, though the invention is neces-- passageway extending therethrough consti-- tuting a mixing chamber, a casing for said valve having openings adapted to register with said passageway, a jet nozzle projecting into said valve and into said passageway, an obstructing device located at one side of said passa eway and between the jet nozzle and such side and arranged, when closed, to prevent the flow of fluid through such side of the passageway, a spring for resisting the opening movement of the obstructing device, and means whereby the tension of said spring may be adjusted.

2. In a device of the character set forth, the combination of a casing having an induction conduit, a valve within said casing adapted to govern the flow of air through said induction conduit a jet nozzle for conveying liquid fuel to the column of air which passes through the conduit, an obstructing device located at one side of said nozzle and arranged to resist the flow of fluid through the conduit, and a spring resisting the movement of the obstructing device to non-obstructing position.

3. In a device of the character set forth, the combination of a rotary valve having a cnrburct-ing chamber therein having ports, a casing for said valve having passageways adapted to register with said ports, a jet nozzle. projecting into said valve and into said chamber, an obstructing device pivoted below said nozzle and extending upwardly from its pivotal support and into substantial contact with a wall of the carbureting chamber at one side of the nozzle and adapted in such position to substantially prevent the flow of fluid between itself and the adjacent wall of the carbureting chamber, an arm engaging the obstructing device, and a spring arranged to hold the arm in contact with said device.

4. In a device of the character set forth, the combination of a rotary valve having a passageway extending therethrough, a casmg for said valve having passageways adapted to register with the passageway within the rotary valve,ajet nozzle projectinginto said valve andpassagewaym leaf or vane pivotally mounted on the inlet side of said passageway and adapted to contact with the wall of the passageway at one side of the nozzle, a spindle projecting into the valve opposite the jet nozzle, an arm projecting from said spindle and adapted to engage the leaf or vane, a spring connected with said spindle in such manner as-to hold the arm in engagement with the leaf or vane, and means located outside of the valve for adjusting the tensionof the spring.-

5. In a device of the character set forth,

the combination of a rotary valve having a carbureting chamber therein having ports, a casing for said valve having passageways adapted to register with said ports, a jet nozzle projecting into said valve aml said chamber, a lgaf or vane pivotally supported on the inlet side of-said chamber with respect to the jet nozzle and adapted to contact with the wall of said chamber at one side of the nozzle, means for rotating said valve, means including a spring for resisting the movement of-the vane or leaf away from the cooperatin g wall of the carburetin" chamber, said means being rotatable witi the valve, and means whereby the tension of the spring may be adjusted independently of the valve-rotating means.

6. In a device of the character set forth, the combination of a rotary plug having a )assageway therefor, a casing for said valve having ports adapted to register with the passageway in said valve, a jet nozzle proecting into said plug, a leaf or vane pivoted low said nozzle and extending upwardly from its pivot and adapted to contact with the wall of the passageway at one side of the jet nozzle, a spindle projecting into the valve port opposite the nozzle, an arm carried by said spindle and adapted to engage the leaf or vane, a spring surrounding the outer portion of said spindle and connected therewith in such manner as to hold the arm in engagement with the vane or leaf, and a member mounted within the wall of the valve and surrounding a portion of the spindle and connected to the opposite eml of the Spring, said member being rotatably adjustable with reference to the spindle and rigidly connected with the valve wall.

7. In a device of the character set forth, the combination of a casing having an induction conduit,.a rotary valve extending across said conduit and provided-with a passageway adapted to register with and form part of said conduit, a jet nozzle within said passageway, and means within said passageway for automatically varying the cross sectional area thereof in the vicinity of the jet nozzle when the port is nearly in register with the induction conduit, said valve being provided with a port whereby the proportions between the inlet to, and outlet from the passageway may be varied.

S. In a deviceofthe character set forth, the combination of .a casin having an'induction conduit, a rotary vlilve plug having a passageway extending theret rough .and adapted to register with said induction con-- duit and provided with a. jet nozzle in said passageway, means whereby the effective area of the passageway on the inlet side of the jet nozzle may be automatically varied when the passageway is nearly in register with the induction conduit, and means whereby the proportions between the areas of the inlet and outlet of the passageway may be varied when the valve approaches. its closed position.

,9. In a. device of the character set :forth,

.the combination of a casing having an mduction conduit extendingtherethrough, a

- rotary plug valveextending' across said conduit and provided with a passageway adapted: to register with said conduit, 9. Jet noz- ;zle witlnnssaid passageway, and means located within said passageway and arranged to-restrict the area of the; passageway in the =vicinity of-said nozzle only when the passageway substantially registers with said conduit.

In testimony whereof, I hereunto affix my -.signature in.the presence of two witnesses.

\VALTER 'GILLETT.

\Vitnesses:

- J :B- HULL .Burmmm Wear.

0091:: at thtxpntcnt may be obtained mum centca0h,tbyalddreu1nithe"'IOommlulonet o! I'atente, wuhlng'tounfl." 

